CN108438010A - A method of preventing high-speed EMUs pivoted arm node axial float - Google Patents
A method of preventing high-speed EMUs pivoted arm node axial float Download PDFInfo
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- CN108438010A CN108438010A CN201711440336.XA CN201711440336A CN108438010A CN 108438010 A CN108438010 A CN 108438010A CN 201711440336 A CN201711440336 A CN 201711440336A CN 108438010 A CN108438010 A CN 108438010A
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- Prior art keywords
- pivoted arm
- arm node
- inner sleeve
- mandrel
- housing
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B61—RAILWAYS
- B61F—RAIL VEHICLE SUSPENSIONS, e.g. UNDERFRAMES, BOGIES OR ARRANGEMENTS OF WHEEL AXLES; RAIL VEHICLES FOR USE ON TRACKS OF DIFFERENT WIDTH; PREVENTING DERAILING OF RAIL VEHICLES; WHEEL GUARDS, OBSTRUCTION REMOVERS OR THE LIKE FOR RAIL VEHICLES
- B61F5/00—Constructional details of bogies; Connections between bogies and vehicle underframes; Arrangements or devices for adjusting or allowing self-adjustment of wheel axles or bogies when rounding curves
- B61F5/26—Mounting or securing axle-boxes in vehicle or bogie underframes
- B61F5/30—Axle-boxes mounted for movement under spring control in vehicle or bogie underframes
- B61F5/305—Axle-boxes mounted for movement under spring control in vehicle or bogie underframes incorporating rubber springs
Abstract
A method of preventing pivoted arm node axial float, according to pivoted arm node present position, pivoted arm node is divided into two vulcanization bodies and is pressed fabricated structure with mandrel, two of which vulcanizes the mutual to being mounted on mandrel of body, and realize that pivoted arm node vulcanizes body rubber part precommpression by the relative position of housing and inner sleeve, axially stop block is set in pivoted arm node, the axial float in pivoted arm node operational process is prevented by axially stop block.The axial limiting includes that pivoted arm node housing limits, the restriction of vulcanization body rubber part, inner sleeve limits and/or the combination of mandrel four aspects of restriction limits, and the axial float prevented in pivoted arm node operational process is realized by the restriction of pivoted arm node housing, the restriction of vulcanization body rubber part, the combination restriction that inner sleeve limits and/or mandrel limits in terms of four.
Description
Technical field
The present invention relates to a kind of oscillation damping methods of the system unit of vehicle, and in particular to preventing high-speed EMUs to one kind
Pivoted arm node axial jump method in operation, it is vibration damping system to be mainly used for the bogie primary of China's standard EMU and two
System.Belong to rail traffic vehicles critical component manufacturing technology field.
Background technology
In order to really form our the autonomous unified high ferro standard techniques of country, China started just to propose to want in 2012
Establish the standard EMU of China.So-called Chinese Industrial Standards (CIS) EMU：It referred to as marks and moves, refer to Chinese Industrial Standards (CIS) system and occupy an leading position
EMU（In 254 major criterions, various Chinese Industrial Standards (CIS)s account for 84%）, the construction reference of profile and mating track
All it is higher than European standard and Nippon Standard, there is distinct and comprehensive Chinese feature；This also refers in the environment in face of diversified CRH
In（Including the four big CRH6 for introducing type and Chinese autonomous Design）, Chinese EMU is carried out and is standardized（It is unitized）Design with
It interconnects.This novel EMU newly developed increases compatibility, large quantities of features such as do not derail again, thus form it is distinct and
Comprehensive China's feature, by using names EMU Chinese Industrial Standards (CIS)（Hua Biao）, represent the advanced standard body of current world's EMU technology
System.
The main purpose for developing Chinese Industrial Standards (CIS) EMU is：
1, the needs of scientific research and innovation, research of technique.The scientific research and research of technique for reinforcing high-speed railway key technology, make China
High ferro technology keeps world lead level.
2, it seeks unity of standard, reduces the needs of cost.For the EMU of different model, unified technical standard body is established
System, realize EMU in service function, with the unification in maintenance, improve efficiency, reduce cost.
In order to adapt to the requirement of Chinese Industrial Standards (CIS) EMU, to being permitted including bogie and bogie integral vibration damping system
More important component is required for re-starting design and research；Wherein, it is to connect for pivoted arm positioning flexible among pivoted arm to be installed on one
It connects, the pivoted arm node for transmitting longitudinal force is exactly one of them.Pivoted arm node is also referred to as axle box guidance joint, is train A class keys portion
Part, performance directly affect vehicle movement stability, and pivoted arm node is because of longitudinal rigidity and deflection stiffness is excessive easilys lead to take turns
To abrasion.According to the position of journal box spring, swing arm type positioning can be divided into axis top spring and ride on spring again positions two kinds.
What standard motor train unit bogie used is exactly the spring positioning of axis top, and the journal box spring seat is in the top of axle box, center line
With wheel to center line in one plane, play main vertical carrying.Pivoted arm node installation is fixed when one is among pivoted arm
Position pivoted arm one end and columnar axle box are affixed, the pivoted arm node and weld architecturally that the other end is made by caoutchouc elasticity
Mounting base is connected.Pivoted arm node allows axle box to have larger vertical deviation with respect to framework, but the rubber in pivoted arm node can be with
It is supplied to the horizontal and vertical locating stiffness that axle-box locating system is different, is positioned with to adapt to rail truck for a system longitudinal and transverse
The requirement of the flexibly positioned rigidity of difference of both direction.But existing EMU will produce prodigious axial punching in running at high speed
It hits, and existing pivoted arm node, there are longitudinal rigidity and deflection stiffness are excessive, pivoted arm node is easy out in normal operation
It now loosens, leads to axial jump, will be easy in this way so that taking turns to abrasion, therefore suddenly need to be solved.
By patent retrieval do not find have with the patent literature of same technique of the present invention, have certain relationship with the present invention
Patent mainly have it is following：
1, Patent No. CN200510031727.7, a kind of entitled " combined ball hinged rubber elastic element axial direction precommpression
The patent of invention of method and product ", which disclose a kind of combined ball hinged rubber elastic element axial direction precommpression methods
And product, belong to a kind of ball hinged rubber elastic element, including metal-coating, elastic rubbery body, inner metal sleeve and mandrel, it is special
Point is that the metal-coating, elastic rubbery body and inner metal sleeve of ball hinged rubber elastic element combine for mutually independent two-period form
Structure, entire ball hinged rubber elastic element are to be combined to constitute by two independent metal-coatings, elastic rubbery body, inner metal sleeves
Elastomer axially combine on mandrel, the elastic rubbery body precompressed stress under compression of ball hinged rubber elastic element is to pass through
Adjust what metal-coating was realized with the mutual axial position of inner metal sleeve.Elastic rubbery body precompressed stress under compression can be inner metal sleeve
It it is two sections of axial separation, by being compressed axially inner metal sleeve, axial position of the adjustment inner metal sleeve on mandrel generates elasticity
Rubber bodies precompressed stress under compression.
2, number of patent application CN200520051167.7, it is entitled " a kind of combined ball hinged rubber elastic element "
Utility model patent, which disclose a kind of combined ball hinged rubber elastic elements, belong to a kind of ball hinged rubber elastic
Element, including metal-coating, elastic rubbery body, inner metal sleeve and mandrel, feature are the gold of ball hinged rubber elastic element
It is mutually independent two-period form composite structure, entire ball hinged rubber elastic element to belong to housing, elastic rubbery body and inner metal sleeve
It is axially combined on mandrel by two independent metal-coatings, elastic rubbery body, inner metal sleeve assembly, flexural pivot class
The elastic rubbery body precompressed stress under compression of rubber elastic element is by adjusting metal-coating and the mutual axial position of inner metal sleeve
It realizes.Elastic rubbery body precompressed stress under compression can be two sections that inner metal sleeve is axial separation, by being compressed axially in metal
Set, axial position of the adjustment inner metal sleeve on mandrel generate elastic rubbery body precompressed stress under compression.
3, Patent No. CN201510707088.5, entitled " adjustment rubber layer pre compressed magnitude changes pivoted arm connection stiffness
Method and pivoted arm node " patent of invention, which disclose a kind of adjustment rubber layer pre compressed magnitude change pivoted arm node it is rigid
The method of degree, to prevent the method that axle box bearing is worn by adjusting pivoted arm node rubber layer pre compressed magnitude, using two pitch cone shapes
Endoporus pivoted arm combination of nodes structure has changed the different axial direction of pivoted arm node just by increasing pivoted arm node rubber layer pre compressed magnitude
Performance is spent, and pivoted arm node axial rigidity is improved by increasing pivoted arm node rubber layer pre compressed magnitude so that axial rigidity control
System avoids deflection stiffness and torsion stiffness from declining in 6-8KN.mm-1, effectively reduces axle bearing abrasion.
4, Patent No. CN201510706982.0, it is entitled " by changing pivoted arm node structure size adjusting rigidity
The patent of invention of method and pivoted arm node ", which disclose a kind of by changing pivoted arm node structure size adjusting rigidity
Method, the method to improve pivoted arm connection stiffness matching performance by adjusting pivoted arm node structure size, using in two pitch cone shapes
Hole pivoted arm combination of nodes structure, and the diameter ruler by changing pivoted arm node rubber molding surface size and pivoted arm node inner sleeve and housing
It is very little to change the rigidity property of pivoted arm node so that the longitudinal rigidity and deflection stiffness of pivoted arm node decline.Pass through rubber-type face
The rigidity of the Matching and modification pivoted arm node of size and the diameter dimension of pivoted arm node inner sleeve and housing so that the longitudinal direction of pivoted arm node
Rigidity and deflection stiffness decline, and ensure that the longitudinal rigidity of pivoted arm node is controlled in 11-13KN.mm-1, and longitudinal rigid by controlling
Degree reduces deflection stiffness, while by increasing axial rigidity, ensureing that the axial rigidity of pivoted arm node is controlled in 6-8KN.mm-1 models
Within enclosing, ensure that torsion stiffness does not decline.
Although these above-mentioned patents have been directed to pivoted arm node, wherein what is also had special proposes that improve pivoted arm node pre-
Decrement changes the technical solution of pivoted arm connection stiffness, but proposed Technological improvement plan does not propose how for Chinese EMU
Requirement improve pivoted arm node, therefore pivoted arm node longitudinal rigidity and deflection stiffness are excessive, and pivoted arm node is in normal operating conditions
Under be susceptible to loosening, lead to axial jump so that wheel to wearing the problem of still have, need further to be studied.
Invention content
It is an object of the invention to cannot be suitable for high-speed EMUs power truck very well for existing pivoted arm node
Demand, there is longitudinal rigidity in product and deflection stiffness is excessive in normal operation, be susceptible to loosening, lead to axial leap up
It is dynamic so that the problem of wheel is to wearing proposes a kind of new method for preventing pivoted arm node axial float, this is new to prevent pivoted arm section
The method of point axial float improves the axial property of pivoted arm node by changing the structure of pivoted arm node, is ensureing pivoted arm node
Variation rigidity in the case of, pivoted arm node axial float is effectively prevent, so that pivoted arm node reaches standard motor train unit bogie
The requirement of dynamic performance.
In order to reach this purpose, the present invention provides a kind of methods preventing pivoted arm node axial float, according to pivoted arm
Pivoted arm node is divided into two vulcanization bodies and is pressed fabricated structure with mandrel by node present position, and two of which vulcanizes the phase of body
Mutually to being mounted on mandrel, and realize that pivoted arm node vulcanizes body rubber body precommpression by the relative position of housing and inner sleeve, it is special
Point is, axially stop block is arranged in pivoted arm node, is prevented in pivoted arm node operational process by axially stop block
Axial float.
Further, the axial limiting includes that pivoted arm node housing limits, vulcanization body rubber part limits, inner sleeve limits
And/or mandrel limits the combination restriction of four aspects, is limited by pivoted arm node housing, vulcanization body rubber part limits, inner sleeve limits
The combination that fixed and/or mandrel limits four aspects limits the axial float realized and prevented in pivoted arm node operational process.
Further, it is by the housing of two vulcanization bodies to dress that the pivoted arm node housing, which limits, and two housing phases
The end face of connection is the step structure that three-stage convex-concave rim of the mouth matches；The external set of wherein one vulcanization is female structure, another vulcanization
External set is outer male structure, together by the cooperation assembly and connection of three-stage convex-concave rim of the mouth interference.
Further, the two housing phase of pivoted arm node in the three-stage step structure that the three-stage convex-concave rim of the mouth matches
It contacts with each other together after the fit on face grouping dress outside housing with end face, and the interior mating surface part group in housing
Mutual end face does not contact after dress, and there are gaps, and rim of the mouth position is positioned close to mandrel entire faying face lower three/
One position, when to ensure that housing is matched together, the three-stage fit on face part of housing is very close to each other, and with than interior
The longer contact surface in mating surface part, facilitate control housing length and prevent soil from remaining in housing gap in.
Further, the inner sleeve limit include before assembling, vulcanize external set with it is interior be sleeved on it is axial there are difference in height,
Inner sleeve is higher by one section of housing in the axial direction；After assembling, inner sleeve is pressed with mandrel so that vulcanizing the platform of set end face and mandrel in vivo
Terrace is concordant, and permanent retention inner sleeve is concordant with mandrel step surface after realizing axial precommpression, effectively prevent two vulcanization bodies axial
The inconsistent axial jump brought of pre compressed magnitude.
Further, vulcanization body rubber part restriction is realized by adjusting adjustable L-type two-part rubber structure
After inner-outer sleeve is respectively pressed into pivoted arm and vehicle frame, in the case where ensureing pivoted arm connection stiffness matching demand, inner sleeve and housing
Outer end face it is axially concordant.
Further, the adjustable L-type two-part rubber structure of the adjustment is to adjust L-type rubber bodies Lr partial-length masters
Radial direction rigidity is provided, La partial-lengths mainly provide axial direction rigidity, by adjust Lr and La length ratio and
Its angle A 1, A2 can effectively adjust product diameter axial direction Rigidity Matching relationship, realize small journal axle than matching relationship, and the matching relationship
It is controllable in a wide range of.
Further, the journal axle rigidity ratio of the pivoted arm node can realize 40：12 and 17.5：10.
Further, mandrel restriction includes the setting hard backstop of axial limiting on mandrel, controls the axial direction of inner sleeve
Compression distance is not in that two vulcanization bodies are compressed axially inconsistent and excess compression after ensureing inner sleeve axial direction precommpression；Simultaneously
After ensureing inner sleeve axial direction precommpression, mandrel step surface is concordant with inner sleeve axial outer end face.
Further, the mandrel is multi-diameter shaft, and one section of the length that multi-diameter shaft and inner sleeve match is the length of inner sleeve,
So that inner sleeve outer end face is concordant with mandrel ladder end face after inner sleeve axial direction precommpression, jumping for inner sleeve is controlled.
The advantage of the invention is that：
The present invention is to limit four by limiting pivoted arm node housing, vulcanizing the restriction of body rubber part, inner sleeve restriction and/or mandrel
The combination of a aspect limits, and is limited by pivoted arm node housing, vulcanization body rubber part limits, inner sleeve limits and/or mandrel limits
The combination of four aspects limits the axial float realized and prevented in pivoted arm node operational process.Have the advantages that so the following：
1, the running axis play of pivoted arm node can be effectively controlled, to reduce abrasion of the wheel pair with track, improves wheel pair
Service life；
2, Interference Fit Design is used between mandrel and inner sleeve, and designs limited step, has the function of axial locking, anti-channeling；
3, pivoted arm node passes through radial and axial two-way precommpression so that pivoted arm node has adjustable when radially, axially carrying
Whole surplus, effectively prevent rubber tensional state occur, to improve product fatigue behaviour；
4, the length of housing can be effectively controlled after by the step structure of three-stage contact and non-contact combination housing being assembled,
Interference phenomenon is avoided the occurrence of simultaneously, prevents housing from generating gap.
Description of the drawings
Fig. 1 is the pivoted arm node general structure schematic diagram of one embodiment of the invention；
Fig. 2 is the vulcanization body structural schematic diagram of one embodiment of the invention；
Fig. 3 is one embodiment of the invention pivoted arm node installation schematic diagram；
Fig. 4 is one embodiment of the invention pivoted arm node installation top cross-sectional view.
Specific implementation mode
It is next in the following with reference to the drawings and specific embodiments that the present invention is further explained.
Embodiment one
Attached drawing gives one embodiment of the invention, it can be seen in the drawings that the present invention relates to one kind preventing pivoted arm node axis
To the method for play, according to pivoted arm node present position, pivoted arm node is divided into two vulcanization body rubber bodies and mandrel press fitting group
Box-like structure, two of which vulcanize body rubber body mutually to being mounted on mandrel, and are realized by the relative position of housing and inner sleeve
Pivoted arm node vulcanizes body rubber body precommpression, and axially stop block is arranged in pivoted arm node, is prevented by axially stop block
Axial float in pivoted arm node operational process.The pivoted arm node includes pivoted arm node housing 1, pivoted arm node inner sleeve 2, vulcanization
Body rubber body 3 and mandrel 4, wherein the pivoted arm node housing 1 of pivoted arm node, pivoted arm node inner sleeve 2, vulcanization body rubber body 3 are divided into
Two vulcanization body assemblys 5 and 6, then combined with the press fitting of mandrel 4, two vulcanization assemblys 5 and 6 are mutually to being mounted in mandrel
On 4, and realize that pivoted arm node vulcanizes body rubber body precompressed by the relative position of pivoted arm node housing 1 and pivoted arm node inner sleeve 2
Contracting, feature are, axially stop block 7 is arranged in pivoted arm node, prevent pivoted arm node from running by axially stop block 7
Axial float in the process.
The axial limiting of the axially stop block 7 include pivoted arm node housing limit 8, vulcanization body rubber body limit 9,
The combination that inner sleeve restriction 10 and/or mandrel limit 11 4 aspects limits, and passes through pivoted arm node housing and limits 8, vulcanization body rubber
The combination restriction realization that body restriction 9, inner sleeve restriction 10 and/or mandrel limit 11 4 aspects prevents in pivoted arm node operational process
Axial float.
It is by the housing of two vulcanization bodies to dress that the pivoted arm node housing, which limits 8, and the end that two housings are connected
Face 12 is the step structure that three-stage convex-concave rim of the mouth matches；The external set of wherein one vulcanization is female structure, another external set of vulcanization
For outer male structure, together by the cooperation assembly and connection of three-stage convex-concave rim of the mouth interference.
Two housing matching end face of pivoted arm node in the three-stage step structure that the three-stage convex-concave rim of the mouth matches
It contacts with each other together after the assembling of the fit on face of housing part 15, and phase after interior mating surface part 16 assembling in housing
Mutual end face does not contact, and there are gaps, and rim of the mouth position is positioned close to the lower one third position of the entire faying face of mandrel
Within, when to ensure that housing is matched together, the three-stage fit on face part of housing is very close to each other, and matches outside three-stage
Conjunction face part has the contact surface longer than interior mating surface part, facilitates the length of control housing and prevents mutual do
It relates to, and soil is avoided to remain in the gap of housing.The housing of pivoted arm node is fitted in pivoted arm, and the housing of pivoted arm node is first
It is pressed into pivoted arm each other by rim of the mouth matched together, then by press so that radial compression is integrally formed in pivoted arm node；It is radial
The 5%-15% for ranging from vulcanizing body rubber layer thickness of compression.
The inner sleeve limit 10 include before assembling, vulcanize external set with it is interior be sleeved on it is axial there are differences in height, be inside sleeved on
Axial direction will stretch out one section；After assembling, so that the internal end face covered outside of vulcanization and mandrel step surface are flat after inner sleeve compression
Together, the outer end face of permanent retention inner sleeve is concordant with mandrel step surface after the axial precommpression of realization, effectively prevent vulcanization body axially pre-
The inconsistent axial jump brought of decrement.The axial compression amount of inner sleeve is the 5%-15% for vulcanizing body rubber layer axial width.
The vulcanization body rubber body, which limits 9, to be realized in inner-outer sleeve by adjusting adjustable L-type two-part rubber structure
After being respectively pressed into pivoted arm and vehicle frame, in the case where ensureing pivoted arm connection stiffness matching demand, the outer end face and mandrel of inner sleeve
Step surface is axially concordant.
The adjustable L-type two-part rubber structure of the adjustment is to adjust L-type rubber bodies Lr partial-lengths mainly to provide diameter
To directional stiffness, La partial-lengths mainly provide axial direction rigidity, by adjusting the ratio and its angle A 1 of Lr and La length,
A2 can effectively adjust product diameter axial direction Rigidity Matching relationship, realize small journal axle than matching relationship, and the matching relationship is interior on a large scale
Controllably.
The journal axle rigidity ratio of the pivoted arm node is controlled 40：12.
It includes the setting hard backstop 13 of axial limiting on mandrel that the mandrel, which limits 10, and control inner sleeve 2 is compressed axially
Distance is not in excess compression after ensureing the axial precommpression of inner sleeve 2；After ensureing the axial precommpression of inner sleeve 2 simultaneously, axis is outside
End face is concordant with mandrel step surface 14.
The mandrel 4 is multi-diameter shaft, multi-diameter shaft and the length that one section of the length that inner sleeve matches is inner sleeve so that inner sleeve
Inner sleeve outer end face is concordant with mandrel step surface 14 after 2 axial precommpression, and control inner sleeve 2 jumps；Multi-diameter shaft entire length is to turn
Arm joint point is stuck in the width of the pivoted arm in car body, and ensures the rotation of pivoted arm there are gaps.
Pass through above-mentioned design so that the pivoted arm node 17 of the present embodiment can be effectively prevent at runtime by multiple restrictions
Axial jump of the pivoted arm node in pivoted arm 18 ensures that product does not loosen in normal operation, and ensures that product exists
Also do not occur play when axial impact.
Embodiment two
Embodiment two and the structure of embodiment one are essentially the same, and the diameter axial rigidity only controlled is than different, Yi Zhongfang
Pivoted arm node is divided into two vulcanization bodies and mandrel by the method for rotation stop arm joint point axial float according to pivoted arm node present position
It is pressed fabricated structure, two of which vulcanizes the mutual to being mounted on mandrel of body, and passes through the relative position of housing and inner sleeve reality
Existing pivoted arm node vulcanizes body rubber part precommpression, and axially stop block is arranged in pivoted arm node, anti-by axially stop block
Axial float in rotation stop arm joint point operational process.
The axial limiting includes that pivoted arm node housing limits, vulcanization body rubber body limits, inner sleeve limits and/or mandrel
The combination for limiting four aspects limits, and is limited by pivoted arm node housing, vulcanization body rubber body limits, inner sleeve limits and/or core
The combination of four aspects of axis limit limits the axial float realized and prevented in pivoted arm node operational process.
It is by the housing of two vulcanization bodies to dress that the pivoted arm node housing, which limits, and the end face that two housings are connected
The step structure to match for three-stage convex-concave rim of the mouth；The external set of wherein one vulcanization is female structure, and another external set of vulcanization is outer
Male structure, together by the cooperation assembly and connection of three-stage convex-concave rim of the mouth interference.
Two housing matching end face of pivoted arm node in the three-stage step structure that the three-stage convex-concave rim of the mouth matches
It contacts with each other together after fit on face grouping dress outside housing, and after the interior mating surface part assembling in housing mutually
End face does not contact, and there are gaps, and rim of the mouth position is positioned close to the lower a quarter position of the entire faying face of mandrel, with
When ensureing that housing is matched together, the three-stage fit on face part of housing is very close to each other, and with than interior cooperation face
Point longer contact surface, facilitate the length of control housing and prevent soil from remaining in housing gap in.
The inner sleeve limit include before assembling, vulcanize external set with it is interior be sleeved on it is axial there are differences in height, be inside sleeved on axis
One section is stretched out to direction；After assembling, after the inner sleeve compression so that external set of vulcanization and the end face of inner sleeve outside and mandrel step
Face is concordant, and the outer end face of permanent retention inner sleeve is concordant with mandrel step surface after the axial precommpression of realization, effectively prevent vulcanization body pre-
The inconsistent axial jump brought of decrement.
The vulcanization body rubber body restriction is realized in pivoted arm section by adjusting adjustable L-type two-part rubber structure
After point is pressed into pivoted arm and car body, in the case where ensureing pivoted arm connection stiffness matching demand, outer end face and the mandrel platform of inner sleeve
Terrace is axially concordant.
The adjustable L-type two-part rubber structure of the adjustment is to adjust L-type rubber bodies Lr partial-lengths mainly to provide diameter
To directional stiffness, La partial-lengths mainly provide axial direction rigidity, by adjusting the ratio and its angle A 1 of Lr and La length,
A2 can effectively adjust product diameter axial direction Rigidity Matching relationship, realize small journal axle than matching relationship, and the matching relationship is interior on a large scale
Controllably.
The journal axle rigidity ratio of the pivoted arm node is controlled 17.5：10.
The mandrel restriction includes the setting hard backstop of axial limiting on mandrel, and control inner sleeve is compressed axially distance,
Be not in excess compression after ensureing inner sleeve axial direction precommpression；After ensureing inner sleeve axial direction precommpression simultaneously, axial outer end face with it is outer
It is concordant to cover axial outer end face.
The mandrel is multi-diameter shaft, multi-diameter shaft and the length that one section of the length that inner sleeve matches is inner sleeve so that inner sleeve
Inner sleeve outer end face is concordant with mandrel ladder end face after axial precommpression, controls jumping for inner sleeve.
Above-mentioned listed embodiment, only carries out clear, complete description in conjunction with attached drawing to technical scheme of the present invention；It is aobvious
So, described embodiment is only a part of the embodiment of the present invention, instead of all the embodiments.Based in the present invention
Embodiment, all other embodiment obtained by those of ordinary skill in the art without making creative efforts, all
Belong to the scope of protection of the invention.
The advantage of the invention is that：
The present invention is to limit four by limiting pivoted arm node housing, vulcanizing the restriction of body rubber body, inner sleeve restriction and/or mandrel
The combination of a aspect limits, and is limited by pivoted arm node housing, vulcanization body rubber body limits, inner sleeve limits and/or mandrel limits
The combination of four aspects limits the axial float realized and prevented in pivoted arm node operational process.Have the advantages that so the following：
1, the running axis play of pivoted arm node can be effectively controlled, to reduce abrasion of the wheel pair with track, improves wheel pair
Service life；
2, Interference Fit Design is used between mandrel and inner sleeve, and designs limited step, has the function of axial locking, anti-channeling；
3, pivoted arm node passes through radial and axial two-way precommpression so that pivoted arm node has adjustable when radially, axially carrying
Whole surplus, effectively prevent rubber tensional state occur, to improve product fatigue behaviour
4, the length of housing can be effectively controlled after by the step structure of three-stage contact and non-contact combination housing being assembled,
Interference phenomenon is avoided the occurrence of simultaneously, prevents housing from generating gap.
Claims (10)
1. pivoted arm node is divided into two by a kind of method preventing pivoted arm node axial float according to pivoted arm node present position
Vulcanize body and be pressed fabricated structure with mandrel, two of which vulcanizes the mutual to being mounted on mandrel of body, and by realizing to pivoted arm
Node vulcanizes body rubber body and implements radially, axially precommpression simultaneously, it is characterised in that：Axial limiting is arranged in pivoted arm node to fill
It sets, the axial float in pivoted arm node operational process is prevented by axially stop block.
2. the method as described in claim 1 for preventing pivoted arm node axial float, it is characterised in that：The axial limiting packet
Pivoted arm node housing is included to limit, vulcanize the combination restriction that the restriction of body rubber body, inner sleeve restriction and/or mandrel limit four aspects,
It is limited by pivoted arm node housing, vulcanization body rubber body limits, inner sleeve limits and/or the combination of mandrel four aspects of restriction limits
Realize the axial float prevented in pivoted arm node operational process.
3. the method as claimed in claim 2 for preventing pivoted arm node axial float, it is characterised in that：Outside the pivoted arm node
It is by the housing of two vulcanization bodies to dress that set, which limits, and the end face that is connected of two housings is the platform that three-stage convex-concave rim of the mouth matches
Stage structure；The external set of wherein one vulcanization is female structure, and another external set of vulcanization is outer male structure, passes through three-stage convex-concave rim of the mouth
The cooperation assembly and connection of interference is together.
4. the method as claimed in claim 3 for preventing pivoted arm node axial float, it is characterised in that：The three-stage convex-concave
The fit on face grouping outside housing of two housing matching end face of pivoted arm node in the three-stage step structure that rim of the mouth matches
It contacts with each other after dress together, and mutually end face does not contact after the interior mating surface part assembling in housing, there are gaps, and will
Rim of the mouth position is positioned close to the lower one third position of the entire faying face of mandrel, with ensure housing match together when
It waits, the three-stage fit on face part of housing is very close to each other, and has the contact surface longer than interior mating surface part, facilitates control
The length of housing and prevent soil from remaining in the gap of housing.
5. the method as claimed in claim 2 for preventing pivoted arm node axial float, it is characterised in that：The inner sleeve limits packet
It includes before assembling, vulcanizes external set and be sleeved on axially there are difference in height with interior, inner sleeve will stretch out one section in the axial direction；After assembling,
So that the external set of vulcanization is concordant with mandrel step surface with the end face of inner sleeve outside after inner sleeve is compressed, after the axial precommpression of realization forever
The outer end face that Kubo holds inner sleeve is concordant with mandrel step surface, and the vulcanization inconsistent axial direction brought of body pre compressed magnitude is effectively prevent to leap up
It is dynamic.
6. the method as claimed in claim 2 for preventing pivoted arm node axial float, it is characterised in that：The vulcanization body rubber
Part restriction is realized after inner-outer sleeve is respectively pressed into pivoted arm and vehicle frame by adjusting adjustable L-type two-part rubber structure,
In the case of ensureing pivoted arm connection stiffness matching demand, the outer end face of inner sleeve is concordant with mandrel step surface.
7. the method as claimed in claim 6 for preventing pivoted arm node axial float, it is characterised in that：The adjustment is adjustable
L-type two-part rubber structure is to adjust L-type rubber bodies Lr partial-lengths mainly to provide radial direction rigidity, and La partial-lengths are main
Axial direction rigidity is provided, by adjusting the ratio and its angle A 1 of Lr and La length, it is axially rigid that A2 can effectively adjust product diameter
Matching relationship is spent, realizes small journal axle than matching relationship, and the matching relationship is a wide range of interior controllable.
8. the method as claimed in claim 7 for preventing pivoted arm node axial float, it is characterised in that：The pivoted arm node
Journal axle rigidity ratio can realize 40：12 and 17.5：10.
9. the method as claimed in claim 2 for preventing pivoted arm node axial float, it is characterised in that：The mandrel limits packet
The setting hard backstop of axial limiting on mandrel is included, the distance that is compressed axially of inner sleeve is controlled, it, will not after ensureing inner sleeve axial direction precommpression
There is excess compression；After ensureing inner sleeve axial direction precommpression simultaneously, the outer end face of inner sleeve is concordant with mandrel step surface.
10. the method as claimed in claim 9 for preventing pivoted arm node axial float, it is characterised in that：The mandrel is rank
Terraced axis, multi-diameter shaft and the length that one section of the length that inner sleeve matches is inner sleeve so that inner sleeve outer end face after inner sleeve axial direction precommpression
It is concordant with mandrel ladder end face, control jumping for inner sleeve.
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| CN201711440336.XA CN108438010B (en) | 2017-12-27 | 2017-12-27 | Method for preventing rotating arm node of high-speed motor train unit from axially shifting |
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| CN201711440336.XA CN108438010B (en) | 2017-12-27 | 2017-12-27 | Method for preventing rotating arm node of high-speed motor train unit from axially shifting |
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| CN108438010B CN108438010B (en) | 2020-10-27 |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP3636510A1 (en) * | 2018-10-08 | 2020-04-15 | Zhuzhou Times New Material Technology Co., Ltd. | Method and device for improving comprehensive performance of elastic component of axleless bogie system |
| CN112678011A (en) * | 2021-01-13 | 2021-04-20 | 株洲时代瑞唯减振装备有限公司 | Method and structure for maintaining insulation between rotating arm node outer sleeve and core shaft |
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| EP1299658B1 (en) * | 2001-04-26 | 2005-06-29 | Phoenix AG | Sleeve, particularly a rod sleeve |
| CN1828084A (en) * | 2005-06-22 | 2006-09-06 | 株洲时代新材料科技股份有限公司 | Axial precompression method for combined ball hinged rubber elastic element and product obtained thereby |
| CN2859078Y (en) * | 2005-06-22 | 2007-01-17 | 株洲时代新材料科技股份有限公司 | Assembling spheric hinge rubber elastic cell |
| CN205423652U (en) * | 2016-03-28 | 2016-08-03 | 株洲时代新材料科技股份有限公司 | Location rubber joint |
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Patent Citations (4)
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| EP1299658B1 (en) * | 2001-04-26 | 2005-06-29 | Phoenix AG | Sleeve, particularly a rod sleeve |
| CN1828084A (en) * | 2005-06-22 | 2006-09-06 | 株洲时代新材料科技股份有限公司 | Axial precompression method for combined ball hinged rubber elastic element and product obtained thereby |
| CN2859078Y (en) * | 2005-06-22 | 2007-01-17 | 株洲时代新材料科技股份有限公司 | Assembling spheric hinge rubber elastic cell |
| CN205423652U (en) * | 2016-03-28 | 2016-08-03 | 株洲时代新材料科技股份有限公司 | Location rubber joint |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP3636510A1 (en) * | 2018-10-08 | 2020-04-15 | Zhuzhou Times New Material Technology Co., Ltd. | Method and device for improving comprehensive performance of elastic component of axleless bogie system |
| CN112678011A (en) * | 2021-01-13 | 2021-04-20 | 株洲时代瑞唯减振装备有限公司 | Method and structure for maintaining insulation between rotating arm node outer sleeve and core shaft |
| CN112678011B (en) * | 2021-01-13 | 2022-07-05 | 株洲时代瑞唯减振装备有限公司 | Method and structure for maintaining insulation between rotating arm node outer sleeve and core shaft |
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|---|---|
| CN108438010B (en) | 2020-10-27 |
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